TL;DR — DNA methylation and histone marks drift with age; epigenetic clocks predict mortality better than birthdays alone. Ca-AKG (via TET enzymes) and NAD+-SIRT1 pathways are the highest-leverage TNiC levers; caloric moderation resets patterns in animal models. Track GrimAge or DunedinPACE every 6–12 months.
What this hallmark means
Epigenetics controls which genes are expressed without changing the DNA sequence. With age, methylation patterns shift — CpG sites gain or lose methyl groups, histones acetylate differently, and chromatin compacts into "aged" configurations.
The Horvath, GrimAge, and DunedinPACE clocks quantify this drift. They predict cardiovascular events and all-cause mortality independent of chronological age. Yamanaka-factor experiments in mice prove epigenetic aging is partially reversible — the hallmark is not fixed destiny.
| Failure mode | What changes | What you feel |
|---|---|---|
| Hypermethylation drift | Tumor suppressor silencing | Subtle metabolic slowdown |
| Hypomethylation chaos | Retrotransposon activation | Inflammation + instability coupling |
| Histone deacetylation loss | Heterochromatin breaks down | Energy inconsistency, "biological ageHow old your cells act — which can differ from your birthday age. Full glossary → gap" |
| TET enzyme decline | Demethylation stalls without α-ketoglutarate | Epigenetic age runs ahead of calendar age |
Hallmark 3 · Epigenetic alterations
A primary hallmark and the best longitudinal readout for intervention response. Connects to genomic instability (H1), mitochondrial dysfunction (H6), and nutrient sensing (H12). TNiC coverage is strong (78%).
Why this matters for your protocol
Epigenetic age is where multi-pathway stacks earn their keep. TET dioxygenases need α-ketoglutarate; sirtuinsLongevity-associated enzymes that repair DNA, regulate metabolism, and control inflammation. Full glossary → need NAD+A molecule every cell needs for energy production, DNA repair, and activating longevity genes (sirtuins). Full glossary →; both decline with age. Single-compound approaches often fail because they address only one enzymatic leg.
Intervention hierarchy (evidence-weighted):
- Ca-AKG — TET cofactor; mouse lifespan extension data (PMID 32877690)
- NMN → SIRT1 epigenetic control — NAD+-dependent histone deacetylation
- Resveratrol → SIRT1 activation — phytoalexin allosteric boost (PMID 17909917)
- Caloric moderation / fasting — resets methylation in animal models; pilot human clock reversal
- Epigenetic clockA lab test measuring DNA methylation patterns across thousands of sites to calculate your true cellular age. Full glossary → testing — GrimAge, DunedinPACE, or TruAge to track response
Ca-AKG extends lifespan and compresses morbidity in mice via TET-mediated epigenetic remodeling (PMID 32877690). NAD+-SIRT1 histone deacetylation is foundational to heterochromatin stability — human NMN trials confirm NAD+ restoration (PMID 36482258).
Practical intervention map
| Lever | Mechanism | Evidence | TNiC resource |
|---|---|---|---|
| Ca-AKG 1 g AM | TET demethylation cofactor | Tier A | NAD+ Mito Stack |
| NMN 250–500 mg AM | NAD+ → SIRT1 substrate | Tier A | NMN |
| Resveratrol PM | SIRT1 allosteric activation | Tier B | Resveratrol |
| Time-restricted eating | mTOR/AMPK → methylation reset | Tier A | Nutrition |
| Methyl donors (B12, folate, choline) | Supports NAD+ methylation drain | Tier A | Nutrition |
← Swipe for more columns →
Your 90-day epigenetic protocol
Weeks 1–4: Order GrimAge or DunedinPACE baseline. Lock 8–10h eating window. Audit methyl donor intake (B12, folate, choline).
Weeks 5–8: Start NMN 250 mg AM fasted. Add Ca-AKG 1 g AM via NAD+ Mito Stack choreography.
Weeks 9–12: Add resveratrol 250 mg PM with fat per SIRT1 pair.
Decision point at week 12: Subjective energy ↑ and NAD+ index improved → continue 12 more weeks before clock retest at 6 mo.
Which epigenetic path first?
GrimAge or DunedinPACE ≥3 years above chronological age?
node | Lifestyle foundation (sleep 7+, TRE, Zone 2) locked 4+ weeks?
Start full NAD+ Mito Stack ramp
node | No clock test but age 50+ and energy ≤5/10?
NMN 250 mg AM → add resveratrol week 8 → clock test at 6 mo
Maintain TRE + methyl donors; retest clock annually
Active cancer treatment or pregnancy — no AKG or high-dose NAD+ without oncology/obstetric clearance
Educational decision aid — a way to organize the evidence, not a prescription. Doses and timing shown are those used in studies; confirm anything you act on with a clinician or pharmacist.
What to measure
| Signal | Type | Frequency | Success looks like |
|---|---|---|---|
| GrimAge / DunedinPACE | Lab | Baseline, 6–12 mo | ↓ vs baseline or slower pace |
| NAD+ index | Lab | Baseline, 4 wk, 12 wk | 80–100 range |
| Fasting glucose / HbA1c | Lab | Baseline, 6 mo | Metabolic health supports clock |
| Methyl donor adequacy | Diet log | Weekly | B12, folate, choline met |
| Energy consistency | Subjective | Daily | ≥7/10 morning, 4-week avg |
← Swipe for more columns →
GrimAge delta (yrs)
+3 to +8 vs calendar
NAD+ index
60–75
Morning energy (1–10)
≤5
GrimAge delta (yrs)
Flat or ↓ 1–2 yrs
NAD+ index
80–100
Morning energy (1–10)
≥7
Track epigenetic biomarkers
Baseline GrimAge or DunedinPACE before stacking; pair with NAD+ index at week 4 and 12.
Open Labs hubRed flags — when to pause or escalate
Stop and consult before intensifying
- Active malignancy or recent chemotherapy — epigenetic modulation requires oncology coordination
- Pregnancy or breastfeeding — insufficient safety data for AKG and high-dose NAD+ precursors
- Unexplained weight loss + accelerated clock — rule out occult disease before longevity stacking
Synergies worth knowing
| Stack | Covers | Best for |
|---|---|---|
| NAD+ Mito Stack | Ca-AKG + NMN + resveratrol + R-ALA | Full epigenetic + mito axis |
| SIRT1 pair | NAD+ cofactor + SIRT1 activator | Budget-conscious epigenetic entry |
| Nutrition TRE | Nutrient sensing reset | Prerequisite or parallel lever |
Build your stack
Enable NAD+ Mito Stack for pre-built Ca-AKG + NMN + resveratrol choreography with synergyWhen two compounds together produce greater effect than either alone. Full glossary → scoring.
Open Stack ArchitectPersonal results template
My epigenetic alterations log
| Date | Week | GrimAge (yrs) | NAD+ index | TRE window | Energy AM (1–10) | Notes |
|---|---|---|---|---|---|---|
| YYYY-MM-DD | 0 | — | — | — | — | Baseline clock |
| YYYY-MM-DD | 12 | — | — | — | — | NAD+ checkpoint |
| YYYY-MM-DD | 26 | — | — | — | — | 6-mo clock retest |
← Swipe for more columns →
Personal response criteria: - Meaningful: NAD+ ≥80 at week 12 + energy ≥7/10; clock flat or ↓ at 6 mo - Plateau: Audit methyl donors and sleep before dose escalation - Adverse: GI distress on AKG or insomnia on NMN → split doses, physician consult
Further reading
- Horvath — epigenetic clock foundation and mortality prediction
- Asadi Shahmirzadi et al. 2020 (PMID 32877690) — Ca-AKG lifespan extension in mice
- Igarashi 2022 (PMID 36482258) — NMN human NAD+ restoration
References
- Asadi Shahmirzadi A et al. Alpha-ketoglutarate extends lifespan in mice. Cell Metabolism (2020). PMID 32877690
- PMID 17909917
- Fukamizu Y et al. NMN supplementation elevates NAD+ levels in healthy adults. GeroScience (2022). PMID 36482258
Links open PubMed. TNiC does not sell supplements; citations support education, not medical advice.